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Brazilian alexandrite

Brazilian alexandrite is said to be of the highest quality, second only to Russian alexandrite. Many of them are highly transparent and have easy-to-understand discoloration effects, but the production volume is decreasing year by year and prices are rising. You may also find one with a strong blue flavor similar to the one from Russia.

Karatz GemMagazine
" Characteristics of Alexandrite by production area "

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Sold out [Available at 10 PM on August 17th] Limited Edition 12 Stones Rare Stone Gacha💎 Benitoite, Zimbabwean Euclase, Brazilian Alexandrite, and Paraiba Tourmaline (Loose Stone) [Multiple Purchase Discounts Available]
Sold out ブラジル産アレキサンドライト 0.054ctルース(エメラルドカット)
Sold out Pt950ブラジル産アレキサンドライト0.301ct・ダイヤモンドリング
Sold out Limited to 5 stones: 1 Brazilian Alexandrite loose stone (round cut, 1.3mm) Multiple purchase discounts available
Sold out ブラジル産アレキサンドライト 0.098ctルース
Sold out ブラジル産アレキサンドライト 0.158ctルース
Sold out ブラジル産アレキサンドライト 0.145ctルース
Sold out Pt900/Pt850 ブラジル産アレキサンドライト 0.2ct ペンダント(ネックレス)
Sold out ブラジル産アレキサンドライト 0.200ctルース GIA
Sold out ブラジル産アレキサンドライト 0.180ctルース  GIA
Sold out ブラジル産アレキサンドライト 0.098ctルース
Sold out ブラジル産アレキサンドライト 0.077ctルース
Sold out ブラジル産アレキサンドライト 0.298ctルース(ヘマチタ鉱山)
Sold out ブラジル産アレキサンドライト 0.280ctルース(ヘマチタ鉱山)
Sold out ブラジル産アレキサンドライト 0.35ctルース(ヘマチタ鉱山) GIA
Sold out ブラジル産アレキサンドライト 0.055ctルース(ヘマチタ鉱山)
Sold out ブラジル産アレキサンドライト 0.560ctルース
Sold out コロンビア産エメラルド 32.379ct原石
Sold out ブラジル産アレキサンドライト 0.081ctルース
Sold out ブラジル産アレキサンドライト 0.583ctルース
Sold out Alexandrite from Brazil 0.214ct Ruth Japanese German edition
Sold out Brazilian alexandrite 2 stone pair 0.24ct loose (0.12ct/0.12ct)

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZの取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.